ARE BLU-RAY MOVIES REGION FREE?

Sorry if somebody already posted this but I noticed that my PS3 (bought in the U.S.) doesn't allow region changes on DVDs. I bought a DVD (Bronson) from the UK and it won't play on my PS3 (super pissed). I was wondering if Blu-ray movies are region free? I have read a lot about the issue and a lot of people give different ideas. Just wanted like a final clear up from PS3 owners. Are blu-ray movies region free? Or would spending $25-$30 on movies made outside the US be just a waste of money?